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SUMMARY:Observation of quantum-field-theory dynamics on a spin-phonon quan
 tum computer
DTSTART:20261118T203000Z
DTEND:20261118T223000Z
DTSTAMP:20261112T191400Z
UID:indico-event-35198@indico.bnl.gov
DESCRIPTION:Speakers: Vinay Vikramaditya (University of Maryland)\n\nQuant
 um simulation is a promising approach to study out-of-equilibrium dynamics
  of quantum gauge field theories\, particularly in regimes where classical
  methods become intractable. Mapping bosonic (gauge) degrees of freedom on
 to qubits requires truncating their infinite dimensional Hilbert space\, l
 eading to errors that grow with system energy and simulation time\, and re
 sulting in a large qubit and gate overhead in fully digital schemes. An al
 ternative method is to augment the qubit-based quantum computer with contr
 ollable bosonic degrees of freedom\, enabling hybrid architectures that na
 turally implement qubit\, bosonic and qubit-bosonic gates. In this work\, 
 we simulate nonequilibrium dynamics of a (1+1)-dimensional Yukawa model\, 
 a fermion-boson quantum field theory\, on a trapped-ion platform where qub
 its are encoded in the ions’ internal levels and bosons in their motiona
 l modes. The fermion- and boson-occupation state probabilities were measur
 ed and found to be in good agreement with classical simulations\, even for
  high phonon occupations. This hybrid approach bypasses the need for a lar
 ge qubit overhead\, and removes truncation errors. Our results\, therefore
 \, open the way to achieving demonstrable quantum advantage in qubit-boson
  quantum computing. In this talk\, we present the theoretical foundations 
 of this work\, the experimental implementation and results.\nhttps://bnl.z
 oomgov.com/j/1659180989?pwd=ptKQrjBOEmGHAKtkC3TTAGNeA3lrsM.1\n\nhttps://in
 dico.bnl.gov/event/35198/
LOCATION:Peter Paul Seminar Room C-120 (Physics Building Stony Brook Unive
 rsity)
URL:https://indico.bnl.gov/event/35198/
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